LAFC played a man down after defender Walker Zimmerman, who was shown a yellow card for time wasting in the 17th minute, was given a red for unsporting behavior in the 48th., Real Salt Lake's Aaron Herrera, who blocked two would-be goals in the first half, was shown a straight red for denial of a goal scoring opportunity on Vela, who then converted from the spot to make it 1-0 in the 64th minute.

Vela, whose 15 assists are tied with Diego Valeri of the Portland Timbers for the league lead, broke the MLS record for combined goals and assists. Sebastian Giovinco's had 22 goals and 16 assists for Toronto FC in 2015.

Miller has eight shutouts this season for LAFC (18-3-4), who have won four consecutive games and seven of their last eight dating to June 28.

Adama Diomande side-netted a rising right-footer to cap the scoring in the 82nd minute.

Salt Lake (12-10-4) had its six-game unbeaten streak, including three straight wins, snapped and allowed multiple goals for the first time since a 4-0 loss to the New York Red Bulls on June 1.